Mitsubishi Denki Kabushiki Kaisha

Hisaaki Tsukahara

Satomi Yamauchi

Hiroshi Yamada

Osamu Gouta

Nobuhiro Mikami

A sewing machine controller comprises sewed cloth (107) moving in a plurality of sewing directions, a sewing machine motor 11 for moving a sewing machine needle (5) up and down for sewing the sewed cloth (107), direction change detection means for detecting a sewing direction of the sewed cloth (107) being changed, operation time detection means for detecting the operation time of the sewing machine motor (11), when the direction change detection means does not detect a change in the sewing direction, stop time detection means for detecting the stop time of the sewing machine motor, when the direction change detection means detects a constant sewing direction, stop time comparison means for comparing the stop time value with a first preset time value, when the sewing direction is constant, operation time comparison means for comparing the operation time value with a second preset time value, when the sewing direction is constant, and display means (35) for displaying the results of the stop time comparison means and the operation time comparison means.

Sewing machine controller

A fabric feed direction reversing device for a sewing machine having a reversing mechanism that switches a sewing object feed direction includes a control means that stops a needle at an upper position or a lower position by controlling a sewing machine drive motor based on a sewing object feed direction reversing command generated from a feed reverse command section, and that operates the reversing mechanism after the needle has stopped, and that operates the sewing machine drive motor after the reversing mechanism operation has been completed.

Fabric feed direction reversing device for sewing machine and control

A control apparatus for a sewing machine in which a microcomputer in the control unit of the sewing machine is provided with a sequence control function, and an on-signal for setting and removing a workpiece is incorporated into the sewing data, whereby no PC exclusively used for sequence control is required. A control apparatus of the invention includes an actuator for setting a workpiece on the sewing machine or removing it from the sewing machine, drive means for driving the actuator on and off, a storage element for storing on-data in the sewing data by which a workpiece is automatically sewn, the on-data serving as an on-signal to set the workpiece on the sewing machine or remove it from the sewing machine, detection means for generating a completion signal of the setting or removing of the workpiece, command means for generating an off-signal in the drive means in accordance with the detection of the completion signal by the detection means, start means for starting to set the workpiece on the sewing machine or remove it from the sewing machine by operating the actuator when the drive means is turned on in accordance with the on-signal, and stop means for stopping motion of the actuator by turning off the drive means in accordance with the off-signal.

Control apparatus and method for sewing machine

A sewing machine having a motor drive operating in response to a controller to rotate in forward and reverse rotation directions. A jogging angle may be set and the drive operated automatically for rotation in forward and/or reverse directions as a function of various operating conditions so that the needle is stopped in an optimum position for piercing a material.

Apparatus and method for controlling sewing machine

A control device for use in a sewing machine and a control method in which the memory contents of a memory element are read when a servo microcomputer generates an interrupt. The control device also changes sewing data by specifying a rewriting format when sewing data are changed, automatically detects the rewriting of the memory contents of a rewritable memory element due to noise, and restores the memory contents to their original state before they have actually been rewritten.

Control device for sewing machine and control method therefor

A drive control apparatus for a driven machine is designed to easily check which of a plurality of parameters indicating the control characteristics of the driven machine have been changed from their factory-set initial values. Initial parameter values are stored in a list in a first memory and current parameter values are stored in a second memory. When a display request is given, the initial values of parameters stored in the first list in a control section are compared to the current values of the parameters stored in nonvolatile memory. The identity of the parameters that have been changed from their initial values are displayed on a liquid crystal display. Also, the stored initial value list is displayed.

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Aichi, Japan

Hisaaki Tsukahara